Layered sampling testing device for capillary water zone

Abstract

The invention relates to a layered sampling testing device for a capillary water zone. n unit columns are connected is series and stacked, so that the device is formed; a separation net of each unit column is embedded into a net embedding plate; a sealing groove is a shallow-groove circular ring with the width of about 20mm and the depth of 1mm, and the shallow-groove circular ring is polished along the inner edge of the net embedding plate to the outer edge, and the diameter and the depth of the circular ring are approximately equal to the diameter and the thickness of the separation net; the lower surface of a lower flange, the edges of the sealing groove and the upper surface of the net embedding plate are painted with organic glass cement uniformly, so that a lower flange disk and the net embedding plate are attached together, and the separation net and an organic glass column pipe are fixed closely further; sizes of an upper flange and the lower flange of each unit column are the same with those of the inner diameter and the outer diameter of the net embedding plate, and a lower flange disk of a previous unit column can be stacked on an upper flange disk of a unit column of a next layer in a seamless manner; rib plates are arranged in position of joints of the upper flange disk, the lower flange disk and the organic glass column pipe; and the unit columns are connected through screws in flange screw holes, so that the unit columns are sealed, connected in series and stacked. The device is simple in structure, low in manufacture and maintenance costs, convenient in operation and high in applicability, and can be popularized and applied widely in fields such as civil engineering, geotechnical engineering and the like for physical simulation researches on various rock and earth masses under the action of capillary water.

Description

technical field [0001] The invention belongs to the field of geotechnical engineering, and in particular relates to similar simulation of tailings dam bodies, testing of capillary water rising speed and height in simulated dam bodies, analysis of stress on tailings dam bodies under the presence of capillary water, and facilitates the simulation of dam bodies The tailings sand at different heights of the capillary water zone is sampled in layers, and then its physical and mechanical properties are tested separately, and the layered sampling device is used to study the physical and mechanical properties of the dam body at different heights of the capillary water zone and its changing law. Background technique [0002] The tailings dam is a containment structure used by the tailings pond to retain tailings and water. A low dam built with local soil, stone and other materials is called an initial dam or a foundation dam. In the production process, with the continuous discharge ...

AI Technical Summary

Problems solved by technology

In 2009, María et al. used numerical simulation methods to study the influence of capillary water on the stability of tailings dams, and proposed that the stability of tailings dams largely depends on the role of capillary water. The existence of capillary water makes tailings dams The safety reserve of the

[0005] Analyzing the research of María et al., it is found that the shortcoming is that the capillary water zone is used as a whole to analyze the stability of the tailings dam, and there will be a large deviation between the analysis results and the actual value

[0006] In the traditional capillary water test device, when the diameter of the device is small, it is difficult to take out the sample; when the diameter of the device is large, the sampling depth is difficult to control, and normal sampling can only be performed on the surface. Unable to achieve little or no disturbance to the original state of the tailings sand and maintain its proper moisture content

Therefore, if the tailings sand at different heights of the capillary water zone cannot be sampled, it is impossible to accurately study the variation law of the physical and mechanical properties of the tailings dam body with different heights of the capillary water zone, and it is also impossible to accurately analyze the stability of the tailings dam

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